problem with for loop index

[roelkers]

Hi Colin,

Because I had this problem a couple of times now I thought I'd let you know. The patch is a basic macro that loops over an array and adds all elements (integer values).

Where it starts to wrong is when I have to check when to send the result to the outlet. I'm not sure what your intended pattern is for that but I check whether the current index (using for-loop) is equal to the array length and then send the stored value to the outlet.
If I do that I will always get a result of zero, because it seems the for-loop will send the last index first.
If I manually build a counter and use that to compare with the array length then it works.

Anyway, Thanks for the awesome plugin. I built sequencer based on a cellular automata last week, was a lot of fun. Looking forward to the library

[colin@loomer]

I'll look into it today. I don't suppose you could attach or otherwise send me both of these presets, if you still have them?

[roelkers]

Okay, I did not have the exact presets anymore but I think it will help you.

[colin@loomer]

Thanks!

[colin@loomer]

Right, I think I see what you mean.

If you wanted to use the [for] module like this, rather than comparing the indices to calculate when the loop has finished, let whatever called the [for] module call the downstream module. This event would be guaranteed to occur after the [for] has finished, and even in the case of an empty array.


([FINISHED!] is just a [print] module in this example.)

But you could also use the [for each] module, which will take a composite object, such as an array, and output each element in order, one-by-one. Which would simplify your macro.

[roelkers]

Thanks for your detailed answer!
This is making a lot more sense now. If I try to apply it I'm still getting way to many results sent to to the result outlet though. I guess my question rather boils down to: How do I conditionally send data to an outlet after the loop ends? I'm trying to use the branch module but its active data inlet (value) i have to connect to the data I want to send. And since the data is changing on every loop iteration it will activate the branch module on each iteration.
Hope this makes sense otherwise I can also try to take another picture.
Cheers Rufus

[colin@loomer]

I think I see what you're asking (but it not, please do post a screenshot or preset and I'll see if I can point you in the right direction.)

Essentially, use a [latch]. This will store the most recent thing sent through the left "write" inlet, and will only output it when it receives something through the right "read' inlet.